/* >>>>>>>>>> EX14_1 <<<<<<<<<< */
void ex14_1 (void)
{ int n = 50, i, j;
double fpi = 3.14159 / 180., step, x, y;
float zlev;
step = 360. / (n - 1);
for (i = 0; i < n; i++)
{ xray[i] = (float) (i * step);
yray[i] = (float) (i * step);
}
for (i = 0; i < n; i++)
{ for (j = 0; j < n; j++)
{ x = xray[i] * fpi;
y = yray[j] * fpi;
zmat[i][j] = (float) (2 * sin (x) * sin (y));
}
}
setpag ("da4p");
disini ();
complx ();
pagera ();
titlin ("Contour Plot", 1);
titlin ("F(X,Y) = 2 * SIN(X) * SIN(Y)", 3);
name ("X-axis", "x");
name ("Y-axis", "y");
intax ();
axspos (450, 2670);
graf (0.f, 360.f, 0.f, 90.f, 0.f, 360.f, 0.f, 90.f);
height (30);
for (i = 0; i < 9; i++)
{ zlev = (float) (-2. + i * 0.5);
setclr ((i + 1) * 25);
if (i == 4)
labels ("none", "contur");
else
labels ("float", "contur");
contur (xray, n, yray, n, (float *) zmat, zlev);
}
height (50);
color ("fore");
title ();
disfin ();
}
int main ()
{ int n = 100, i, ic;
double fpi = 3.1415926 / 180.0, step, x;
float xray[100], y1ray[100], y2ray[100];
step = 360. / (n - 1);
for (i = 0; i < n; i++)
{ xray[i] = (float) (i * step);
x = xray[i] * fpi;
y1ray[i] = (float) sin (x);
y2ray[i] = (float) cos (x);
}
metafl ("cons");
scrmod ("revers");
disini ();
pagera ();
complx ();
axspos (450, 1800);
axslen (2200, 1200);
name ("X-axis", "x");
name ("Y-axis", "y");
labdig (-1, "x");
ticks (9, "x");
ticks (10, "y");
titlin ("Demonstration of CURVE", 1);
titlin ("SIN(X), COS(X)", 3);
ic = intrgb (0.95,0.95,0.95);
axsbgd (ic);
graf (0.0, 360.0, 0.0, 90.0, -1.0, 1.0, -1.0, 0.5);
setrgb (0.7, 0.7, 0.7);
grid (1, 1);
color ("fore");
height (50);
title ();
color ("red");
curve (xray, y1ray, n);
color ("green");
curve (xray, y2ray, n);
disfin ();
return 0;
}
int main ( int argc, char *argv[] )
/******************************************************************************/
/*
Purpose:
CIRCLE_INOUT uses DISLIN to draw points in and out of a circle.
Licensing:
This code is distributed under the GNU LGPL license.
Modified:
01 May 2011
Author:
John Burkardt
Reference:
Helmut Michels,
The Data Plotting Software DISLIN - version 10.4,
Shaker Media GmbH, January 2010,
ISBN13: 978-3-86858-517-9.
*/
{
int i;
int j;
int m;
int n_circle = 100;
int n_in;
int n_out;
int pat;
float pi = 3.14159265;
float r;
float s;
float t;
float *x;
float *xy_in;
float *xy_out;
float *y;
printf ( "\n" );
printf ( "CIRCLE_INOUT:\n" );
printf ( " C version\n" );
printf ( " Use DISLIN routines to make a scatterplot.\n" );
/*
Read the data.
*/
r4mat_header_read ( "circle_in.txt", &m, &n_in );
xy_in = r4mat_data_read ( "circle_in.txt", m, n_in );
r4mat_header_read ( "circle_out.txt", &m, &n_out );
xy_out = r4mat_data_read ( "circle_out.txt", m, n_out );
/*
Specify the format of the output file.
*/
metafl ( "png" );
/*
Indicate that new data overwrites old data.
*/
filmod ( "delete" );
/*
Specify the name of the output graphics file.
*/
setfil ( "circle_inout.png" );
/*
Choose the page size and orientation.
'USA' is 2160 plot units wide and 2790 plot units high.
'P' requests PROFILE rather than LANDSCAPE orientation.
*/
setpag ( "usap" );
/*
For PNG output, use reverse the default black background to white.
*/
scrmod ( "reverse" );
/*
Open DISLIN.
*/
disini ( );
/*
Plot a border around the page.
*/
pagera ( );
/*
Use the COMPLEX font.
*/
complx ( );
/*
Set the axis origin 230 plot units to the right, and 2560 plot units DOWN.
*/
axspos ( 230, 2560 );
/*
Define the X and Y sizes of the axis system in plot units.
*/
axslen ( 1700, 1700 );
/*
Label the X and Y axes.
*/
name ( "<--- X --->", "X" );
name ( "<--- Y --->", "Y" );
/*
Relate the physical coordinates to the axes.
*/
graf ( 0.0, 1.0, 0.0, 0.1, 0.0, 1.0, 0.0, 0.1 );
/*
Define axis system titles.
*/
titlin ( "Random points inside/outside the unit circle", 1 );
/*
Draw the title.
*/
title ( );
/*
Add a grid, with one grid line for every tick mark in the X and Y axes.
*/
grid ( 1, 1 );
/*
Select the shading pattern.
*/
pat = 16;
shdpat ( pat );
/*
Set the color to blue.
*/
color ( "blue" );
/*
At every data point, draw a circle of radius 0.01.
*/
for ( i = 0; i < n_in; i++ )
{
rlcirc ( xy_in[0+i*2], xy_in[1+i*2], 0.01 );
}
/*
Set the color to red.
*/
color ( "red" );
/*
At every data point, draw a circle of radius 0.01.
*/
for ( i = 0; i < n_out; i++ )
{
rlcirc ( xy_out[0+i*2], xy_out[1+i*2], 0.01 );
}
/*
Draw a red circle.
*/
x = ( float * ) malloc ( n_circle * sizeof ( float ) );
y = ( float * ) malloc ( n_circle * sizeof ( float ) );
for ( i = 0; i < n_circle; i++ )
{
t = pi * ( float ) ( i ) / ( float ) ( n_circle - 1 );
x[i] = cos ( t );
y[i] = sin ( t );
}
thkcrv ( 10 );
curve ( x, y, n_circle );
/*
End this plot.
*/
endgrf ( );
/*
Free memory.
*/
free ( x );
free ( xy_in );
free ( xy_out );
free ( y );
/*
Close DISLIN.
*/
disfin ( );
/*
Terminate.
*/
printf ( "\n" );
printf ( "CIRCLE_INOUT:\n" );
printf ( " Normal end of execution.\n" );
return 0;
}
int main ( int argc, char *argv[] )
/******************************************************************************/
/*
Purpose:
MAIN demonstrates the use of bar graphs.
Modified:
09 April 2011
Reference:
Helmut Michels,
The Data Plotting Software DISLIN - version 10.4,
Shaker Media GmbH, January 2010,
ISBN13: 978-3-86858-517-9.
*/
{
static char cbuf[25];
static char *ctit = "Bar Graphs (BARS)";
int i;
int nya = 2700;
static float x[9] = { 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0 };
static float y[9] = { 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 };
static float y1[9] = { 1.0, 1.5, 2.5, 1.3, 2.0, 1.2, 0.7, 1.4, 1.1 };
static float y2[9] = { 2.0, 2.7, 3.5, 2.1, 3.2, 1.9, 2.0, 2.3, 1.8 };
static float y3[9] = { 4.0, 3.5, 4.5, 3.7, 4.0, 2.9, 3.0, 3.2, 2.6 };
printf ( "\n" );
printf ( "DISLIN_EX05:\n" );
printf ( " C version:\n" );
printf ( " Demonstrate the display of data in bar graphs.\n" );
/*
Specify the format of the output file.
*/
metafl ( "png" );
/*
Specify that if a file already exists of the given name,
the new data should overwrite the old.
*/
filmod ( "delete" );
/*
Specify the name of the output graphics file.
*/
setfil ( "dislin_ex05.png" );
/*
Choose the page size and orientation.
*/
setpag ( "usap" );
/*
For PNG output, reverse the default black background to white.
*/
scrmod ( "reverse" );
/*
Open DISLIN.
*/
disini ( );
/*
Plot a border around the page.
*/
pagera ( );
/*
Use the COMPLEX font.
*/
complx ( );
ticks ( 1, "x" );
intax ( );
axslen ( 1600, 700 );
titlin ( ctit, 3 );
legini ( cbuf, 3, 8 );
leglin ( cbuf, "FIRST", 1 );
leglin ( cbuf, "SECOND", 2 );
leglin ( cbuf, "THIRD", 3 );
legtit ( " " );
shdpat ( 5L );
for ( i = 1; i <= 3; i++ )
{
if ( 1 < i )
{
labels ( "none", "x" );
}
axspos ( 300, nya-(i-1)*800 );
graf ( 0.0, 10.0, 0.0, 1.0, 0.0, 5.0, 0.0, 1.0 );
if ( i == 1 )
{
bargrp ( 3, 0.15 );
color ( "red" );
bars ( x, y, y1, 9 );
color ( "green" );
bars ( x, y, y2, 9 );
color ( "blue" );
bars ( x, y, y3, 9 );
color ( "fore" );
reset ( "bargrp" );
}
else if ( i == 2 )
{
height ( 30 );
labels ( "delta", "bars" );
labpos ( "center", "bars" );
color ( "red" );
bars ( x, y, y1, 9 );
color ( "green" );
bars ( x, y1, y2, 9 );
color ( "blue" );
bars ( x, y2, y3, 9 );
color ( "fore" );
reset ( "height" );
}
else if ( i == 3 )
{
labels ( "second", "bars" );
labpos ( "outside", "bars" );
color ( "red" );
bars ( x, y, y1, 9 );
color ( "fore" );
}
if ( i < 3 )
{
legend ( cbuf, 7 );
}
else
{
height ( 50 );
title ( );
}
endgrf ( );
}
/*
Close DISLIN.
*/
disfin ( );
/*
Terminate.
*/
printf ( "\n" );
printf ( "DISLIN_EX05:\n" );
printf ( " Normal end of execution.\n" );
return 0;
}
